Compilare: user.cpp: In function ‘int main()’: user.cpp:14:11: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>>a+1; ^ user.cpp:16:11: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>>b+1; ^ user.cpp:32:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<=strlen(b+1);i++){ ^